Manufacture of mineral fiber

Details Manufacture of mineral fiber Manufacture of mineral fiber

1993-09-16

1994-10-04

Lindsay, Robert L.

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

By slinging or rotary-centrifugal fiber distribution

65 19, 65 27, 65480, 65482, C03B 3706

Patent

active

053522605

ABSTRACT:
The initial stages in the manufacture of a glass-like mineral fiber suitable for a multiplicity of industrial uses are essentially conventional; a charge of raw minerals (igneous rock, basalt, slag from a blast furnace or other metal working furnace, phosphate slag, etc.) is melted, then spun and collected to produce a fibrous mineral "blanket". The "blanket" is chopped up, separated, and screened, producing a prilled material constituting a multiplicity of mineral fiber pellets of given average size. These pellets are subjected to brief, rapid acceleration, as by contact with a high-speed toothed rotary wheel, to accelerate and stress the pellets into an industrially usable material constituting a multiplicity of shredded, flake-like mineral fiber elements, at least one such element for each pellet.

REFERENCES:
patent: 3469961 (1969-09-01), Barnhart et al.
patent: 4244720 (1981-01-01), Boen et al.
patent: 4357154 (1982-11-01), Hartung
patent: 4711662 (1987-12-01), Harada
patent: 5255900 (1993-10-01), Schott

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